someone inexperienced leading others who also lack experience
経験のない人が他の経験のない人を導いている (keiken no nai hito ga hoka no keiken no nai hito o michibiite iru)
"The new trainees teaching each other is like the blind leading the blind."
"新しい研修生が互いに教え合っているのはまるで 盲目の者が盲目の者を導いている ようだ" (atarashī kenshūsei ga tagai ni oshieatte iru no wa marude **mōmoku no mono ga mōmoku no mono o michibiite iru** yō da)
to make a very serious promise that something is true
someone who talks a lot, especially a child
to begin to develop or become clear
to have a complaint or disagreement with someone
That opportunity is gone and cannot be used anymore.
in the process of being developed or built